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Thread: Math Survey

  1. #1 Math Survey 
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    I'm collecting some data for school and need data from as many people as possible. Thanks!

    Who can solve this problem in one try without looking at the answer?


    A fool wants to tie a rope around the earth. So he buys a rope of 40,000 KM and ties it around the world. His neighbour, also a fool, wants to do the same only he wants the rope on sticks 1 meter above the ground.

    How much more rope does he need?

    And how much more rope do you need when you use a tennis ball instead of the earth?



    Be honest! And be sure to leave a post saying whether or not you get it on the first try!

    The answer can be found at http://mindcipher.com/puzzle/42-don-t-hang-yourself

    Thanks for your help!


    MindCipher.com
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  3. #2  
    Administrator KALSTER's Avatar
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    Got it first try.


    Disclaimer: I do not declare myself to be an expert on ANY subject. If I state something as fact that is obviously wrong, please don't hesitate to correct me. I welcome such corrections in an attempt to be as truthful and accurate as possible.

    "Gullibility kills" - Carl Sagan
    "All people know the same truth. Our lives consist of how we chose to distort it." - Harry Block
    "It is the mark of an educated mind to be able to entertain a thought without accepting it." - Aristotle
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  4. #3  
    Forum Professor river_rat's Avatar
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    ditto
    As is often the case with technical subjects we are presented with an unfortunate choice: an explanation that is accurate but incomprehensible, or comprehensible but wrong.
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  5. #4  
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    et dittorius
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  6. #5 Re: Math Survey 
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    Quote Originally Posted by vette982
    I'm collecting some data for school and need data from as many people as possible. Thanks!

    Who can solve this problem in one try without looking at the answer?


    A fool wants to tie a rope around the earth. So he buys a rope of 40,000 KM and ties it around the world. His neighbour, also a fool, wants to do the same only he wants the rope on sticks 1 meter above the ground.

    How much more rope does he need?

    And how much more rope do you need when you use a tennis ball instead of the earth?



    Be honest! And be sure to leave a post saying whether or not you get it on the first try!

    The answer can be found at http://mindcipher.com/puzzle/42-don-t-hang-yourself

    Thanks for your help!
    Yep. Got it first try.

    And the answer provided at the web site is only an approximation, good to two decimal places. Had I asked this question on a test, the web site would have received only about 75% credit.
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  7. #6  
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    Ok. I admit to being a fool. I got the first part. I don't see why you need more rope with the tennis ball. Sigh![/u]
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  8. #7  
    Forum Isotope (In)Sanity's Avatar
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    I would also have to say the second part is a bit odd. The first part makes complete and total sense. I'm going to go with your going to need a whole lot more tennis balls to use up that 40,000 KM of rope you got to go around the earth. The answer given also doesn't apply to the tennis ball. The formula is correct, the value is just not accurate for the tennis ball. That's unless it's the size of the planet
    Pleased to meet you. Hope you guess my name
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  9. #8  
    Forum Junior DivideByZero's Avatar
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    first try, elementary algebra
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  10. #9  
    Forum Junior c186282's Avatar
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    I got it
    But I do question your sampling method.
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  11. #10  
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    Ok, guys, I was outsmarting myself by reading the question in a way that I expected I needed more rope in toto for the ball than the earth. Another genius heard from!
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